260 



LOWER EOCKXE FLORAS OF SOUTHEASTERN NORTH AMERICA. 



has riH'ordod a six'cics of Eu])h()r1)i()])hylhiiii 

 from the Ypresiaii of the Isle of Slioppcy. 



Occurrence. — Lagraiigo formation (iu Ixvls of 

 Wileox ago), li miles west of Graml Junction, 

 in Fayette Comity, Temi. (collected by E. W. 

 Berry). 



Collection. — X'. S. National Museum. 



Order SAPINDALES. 



Family ANACARDIACEffl. 



Genus HETEROCALYX Saporta. 



Fruit a single-seeded drupe witli an accres- 

 cent, scarious, nonnaUy tlu-ee-partcd, abor- 

 tively two-parted, or rarely four or five parted, 

 netted-veined calyx. Tliis genus was founded 

 by Saporta in 1S67 ' to replace the term Trilo- 

 bium proposed b}' him in 1 86 1 .- The type and 

 only species was Heterocalyx ungeri Saporta, 

 with which were identified Getonia petreseformis 

 Unger ^ and Elaphrlum antiquum Unger.^ 



This species occurs at ALx, Sused, Sotzka, 

 Radoboj, and Celas, thus ranging from the base 

 of the Ohgocene (Sannoisian) into the Miocene. 

 It was compared by Saporta with the genera 

 Astronium, Mangifera, Anasillis, Melanorrhea, 

 and LoxostyUs, especially with the hi-st and last 

 of these, which are BraziUan genera of the 

 Anacardiaceje. It was compared by Engler 

 with Parishia, a Malayan genus of this same 

 family. A single species of Heterocalyx is 

 present in the Wilcox flora. 



Heterocalyx saportana Berry, n. sp. 



Plate LIX, figure 1. 



Description. — Fruit small, probably a drupe, 

 elliptical in side view, about 2.5 millimeters in 

 length . by about 1 millimeter in diameter, 

 attached to a persistent calyx consisting of 

 tliree or four elliptical scarious sepals about 

 3.5 millimeters in length l)y about 1.5 milli- 

 meters in maximum width, which is in the 

 middle part. Venation very thin and faint, 

 consisting of a scarcely discernible midvein and 

 one or two illy defined laterals comiected with 



1 Saporta. G, de, Etudes sur la v(*g(?tation du sud-est de la France k 

 IV'poque tertiaire, vol. 3, suppl. 1, p. 110, 1867. 



■•Saporta, G. de, Examenanalytiquedesflores tertiaires de Provence, 

 p. 32, ISfil. 



' Unger, Franz, Chloris protogsea, p. 139, pi. 47, figs. 1, 2; Die fossile 

 Flora von Sotzka, pi. 2.3, figs. 1-4, 1850; Sylloge plantarum fossiliiun, 

 pt. 3, pi. 17, Bgs, 4, 5, ISfi.'i. ' 



'Unger, Franz, Sylloge plantarum fossilium, pt. 1, p. 47, pi. 21, figs. 

 7-22, 1859. 



the midvein ])y line ti'iinsverse nervilles. 

 Margins entire. 



This fruit is much smaller than Heterocalyx 

 ungeri Saporta, the illustration, which is en- 

 larged four times, being a])out the same size 

 as that species. It also fails to show any trace 

 of the long slender pedicle of Heterocalyx 

 ungeri, but this is commonly missing in the 

 French specimens. The sepals arc less pointed 

 than those of the European type, and the vena- 

 tion is less prominent; the latter feature is 

 probably correlated with the much smaller 

 size of the American species, which is also 

 geologically much older than the type of the 

 genus. 



The species is based on the single spechnon 

 figured, although this can not be taken as an 

 indication of the rarity of the fonn, as its small 

 size would in a measure cause it to be over- 

 looked ui the field unless it were present in 

 great abundance. 



Occurrence. — HoUy Springs sand. Early 

 Grove, Marshall County, Miss, (collected by 

 E. W. Berry). 



Collection. — U. S. National Museum. 



Genus METOPIUM P. Browne. 



Metopium wilcoxianum Berry, n. sp. 

 Plates LVII, figures 2 and 3, and CXI, figure 5. 



Description. — Leaflets relatively small, petio- 

 lulate, broadly elliptical or suborbicidar in 

 general outline, rounded or broadly cuncate at 

 the base, somewhat naiTowed distad to the 

 broadly rounded or slightly emarginate ti]). 

 Length ranges from 5 to 6.5 centimeters. 

 Maxunum width, at or below the middle, 

 ranges from 3 to 3.55 centimeters. Margins 

 entire, slightly irregular. Texture coriaceous. 

 Petiolule relatively long and stout, expanded 

 proximad, about 8 millimeters in length. 

 Midrib stout and prominent. Secondaries nu- 

 merous, nearly straight, subparallel, campto- 

 drome; a])out nine alternate paire diverge 

 from the midrib at angles of about 55°. 



This species appears to be confuied to the 

 upper part of the Wilcox. 



The only Wilcox species which Metopium 

 wilcoxianum at all closely resembles is Ana- 

 cardites metopifolia Berry, a form that is gen- 

 erally much smaller, relatively more elongate 

 and ovate, and lias more numerous secondaries 

 and a shorttu' petiolule. 



